Timeline for Why do many laptops run on 19 volts?
Current License: CC BY-SA 4.0
8 events
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| Feb 10, 2021 at 15:41 | comment | added | Graham Davies | Michael : I was immersed in the details when I made the original post, but they have faded a bit now. CUI has a blog post on the subject which is worth a read. In brief, 30 volts is OK only with Inherent Power Limiting, which increases the design complexity and cost. If you have only Current Limiting, the common low-cost choice, then you are restricted to 20 volts. Everyone : If this really matters to you, do your own research, but I stand by the general tone of my post. The choice has nothing to do with battery pack organization or LCD screens. | |
| Feb 9, 2021 at 13:24 | comment | added | Michael Böckling | Are you referring to IEC 60950-1? Because that says 30V / 100W max I think? | |
| Feb 5, 2021 at 17:58 | comment | added | Gabriel Fair | Has this changed? Since the USB-C power profile/standard is to use 20volts for power delivery, many laptops are now conforming to this standard. LPS doesn't seem to be slowing them down from adopting this. | |
| Aug 11, 2020 at 20:37 | comment | added | Homunculus Reticulli | Nice and simple answer. | |
| Mar 12, 2019 at 10:31 | vote | accept | sharptooth | ||
| Mar 8, 2019 at 5:27 | history | edited | dim | CC BY-SA 4.0 |
deleted 47 characters in body
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| Mar 8, 2019 at 3:05 | review | Late answers | |||
| Mar 8, 2019 at 5:54 | |||||
| Mar 8, 2019 at 2:45 | history | answered | Graham Davies | CC BY-SA 4.0 |